//*****************************************************************************
//
// timers.c - Timers example.
//
// Copyright (c) 2005,2006 Luminary Micro, Inc.  All rights reserved.
//
// Software License Agreement
//
// Luminary Micro, Inc. (LMI) is supplying this software for use solely and
// exclusively on LMI's Stellaris Family of microcontroller products.
//
// The software is owned by LMI and/or its suppliers, and is protected under
// applicable copyright laws.  All rights are reserved.  Any use in violation
// of the foregoing restrictions may subject the user to criminal sanctions
// under applicable laws, as well as to civil liability for the breach of the
// terms and conditions of this license.
//
// THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// LMI SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
// CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
//
// This is part of revision 852 of the Stellaris Driver Library.
//
//*****************************************************************************

#include "hw_ints.h"
#include "hw_memmap.h"
#include "hw_types.h"
#include "debug.h"
#include "interrupt.h"
#include "sysctl.h"
#include "gpio.h"
#include "timer.h"
#include "../osram96x16.h"

//*****************************************************************************
//
//! \addtogroup ev_lm3s811_list
//! <h1>Timer (timers)</h1>
//!
//! This example application demonstrates the use of the timers to generate
//! periodic interrupts.  One timer is set up to interrupt once per second and
//! the other to interrupt twice per second; each interrupt handler will toggle
//! its own indicator on the display.
//
//*****************************************************************************

//*****************************************************************************
//
// Flags that contain the current value of the interrupt indicator as displayed
// on the OLED display.
//
//*****************************************************************************
unsigned long g_ulFlag0;
unsigned long g_ulFlag1;

//*****************************************************************************
//
// The error routine that is called if the driver library encounters an error.
//
//*****************************************************************************
#ifdef DEBUG
void
__error__(char *pcFilename, unsigned long ulLine)
{
}
#endif

//*****************************************************************************
//
// The interrupt handler for the first timer interrupt.
//
//*****************************************************************************
void
Timer0IntHandler(void)
{
    //
    // Clear the timer interrupt.
    //
    TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);

    //
    // Toggle the flag for the first timer.
    //
    HWREGBITW(&g_ulFlag0, 0) ^= 1;

    //
    // Update the interrupt status on the display.
    //
    //IntMasterDisable();
    //OSRAMStringDraw(HWREGBITW(&g_ulFlags, 0) ? "1" : "0", 36, 1);
    //IntMasterEnable();
}

//*****************************************************************************
//
// The interrupt handler for the second timer interrupt.
//
//*****************************************************************************
void
Timer1IntHandler(void)
{
    //
    // Clear the timer interrupt.
    //
    TimerIntClear(TIMER1_BASE, TIMER_TIMA_TIMEOUT);

    //
    // Toggle the flag for the second timer.
    //
    HWREGBITW(&g_ulFlag1, 0) ^= 1;

    //
    // Update the interrupt status on the display.
    //
    //IntMasterDisable();
    //OSRAMStringDraw(HWREGBITW(&g_ulFlags, 1) ? "1" : "0", 78, 1);
    //IntMasterEnable();
}

//*****************************************************************************
//
// This example demonstrates how to setup an analog comparator and trigger
// interrupts on output changes.
//
//*****************************************************************************
int
main(void) {
	unsigned char fl;
	unsigned char c_fl;
	unsigned char d_fl;
    //
    // Set the clocking to run directly from the crystal.
    //
    SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
                   SYSCTL_XTAL_6MHZ);

    //
    // Initialize the OLED display and write status.
    //
    OSRAMInit(true);
	OSRAMStringDraw("**Press button**", 0, 0);
    OSRAMStringDraw("----------------", 0, 1);

    //
    // Enable the peripherals used by this example.
    //
    SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
	SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);
	SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);  //set GPIO on chanel_C

    //
    // Enable processor interrupts.
    //
    IntMasterEnable();

    //
    // Configure the two 32-bit periodic timers.
    //
    TimerConfigure(TIMER0_BASE, TIMER_CFG_32_BIT_OS);
    TimerConfigure(TIMER1_BASE, TIMER_CFG_32_BIT_OS);
    TimerLoadSet(TIMER0_BASE, TIMER_A, SysCtlClockGet()/16);
    TimerLoadSet(TIMER1_BASE, TIMER_A, SysCtlClockGet()/5);

    //
    // Setup the interrupts for the timer timeouts.
    //
    IntEnable(INT_TIMER0A);
    IntEnable(INT_TIMER1A);
    TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
    TimerIntEnable(TIMER1_BASE, TIMER_TIMA_TIMEOUT);

    //
    // Enable the timers.
    //
    //TimerEnable(TIMER0_BASE, TIMER_A);
    //TimerEnable(TIMER1_BASE, TIMER_A);

    //
    // Loop forever while the timers run.
    //
	while(1) {
		GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4, 1);
		fl = GPIOPinRead(GPIO_PORTC_BASE, GPIO_PIN_4)?1:0;
		if (fl==1) continue;
		TimerEnable(TIMER0_BASE, TIMER_A);
		TimerEnable(TIMER1_BASE, TIMER_A);
		break;
	}	
	OSRAMClear();
	while(1) {
		fl=GPIOPinRead(GPIO_PORTC_BASE, GPIO_PIN_4)?1:0;
		if (g_ulFlag0&&!fl&&!g_ulFlag1) c_fl=1;
		if (c_fl && fl && !g_ulFlag1) { 
			g_ulFlag0=0;
			TimerEnable(TIMER0_BASE, TIMER_A);
			OSRAMStringDraw("POPbtn",0,0); break; 
		}
		if (g_ulFlag1) break;
	}
	d_fl=0;
	while (1) {
		fl=GPIOPinRead(GPIO_PORTC_BASE, GPIO_PIN_4)?1:0;
		if (g_ulFlag1) break;
		if (g_ulFlag0 && !fl ) { d_fl=1; break; }
	}
	OSRAMClear();
	if (d_fl==1) OSRAMStringDraw("D_Click",0,0);
	else OSRAMStringDraw("Click",0,0);

}
